DS2450.cpp

#include "OneWireHub.h"
#include "DS2450.h"

#define DEBUG_DS2450

DS2450::DS2450(byte ID1, byte ID2, byte ID3, byte ID4, byte ID5, byte ID6, byte ID7): OneWireItem(ID1, ID2, ID3, ID4, ID5, ID6, ID7){
/*  ((sDS2450*)(this->Data))->cmd = 0;
  ((sDS2450*)(this->Data))->adr1 = 0;
  ((sDS2450*)(this->Data))->adr2 = 0;
  ((sDS2450*)(this->Data))->CA = 0x0102;
  ((sDS2450*)(this->Data))->CB = 0x0304;
  ((sDS2450*)(this->Data))->CC = 0x0506;
  ((sDS2450*)(this->Data))->CD = 0x0708;
  ((sDS2450*)(this->Data))->CRC = 0;

  memset(&this->memory, 0, sizeof(this->memory));
  uint16_t* p = (uint16_t*)&this->memory.control_status;
  *p++ = 0x8C08;
  *p++ = 0x8C08;
  *p++ = 0x8C08;
  *p++ = 0x8C08;
  *p++ = 0xFF00;
  *p++ = 0xFF00;
  *p++ = 0xFF00;
  *p++ = 0xFF00;
  this->memory.calibration[4] = 0x40;
*/  

  memset(&this->memory, 0, sizeof(this->memory));
}

bool DS2450::duty(OneWireHub * hub)
{
  uint16_t memory_address;
  uint16_t memory_address_start;
  uint8_t b;
  uint16_t crc;
  
  ow_crc16_reset();

  uint8_t done = hub->recv();    
  switch (done) {
    // READ MEMORY
    case 0xAA:     
      // Cmd
      ow_crc16_update(0xAA);
      
      // Adr1
      b = hub->recv();
      ((uint8_t*)&memory_address)[0] = b;
      ow_crc16_update(b);

      // Adr2
      b = hub->recv();
      ((uint8_t*)&memory_address)[1] = b;
      ow_crc16_update(b);
      
      memory_address_start = memory_address;

      for (int i=0;i<8;i++){
        uint8_t b = this->memory[memory_address+i];
        hub->send(b);
      }

      crc = ow_crc16_get();
      hub->send(((uint8_t*)&crc)[0]);
      hub->send(((uint8_t*)&crc)[1]);

      #ifdef DEBUG_DS2450
        Serial.print("DS2450 : READ MEMORY : ");
        Serial.println(memory_address_start, HEX);
      #endif

      break;

    default:    
      #ifdef DEBUG_hint
        Serial.print("DS2450=");
        Serial.println(done, HEX);
      #endif  
      break;    
  }
  
  return TRUE;
}

/*
bool DS2450::updateCRC(){
//  ((sDS2450*)(this->Data))->CRC = crc16( this->Data, 11 );
  
  ow_crc16_reset();      
  for (int i=0;i<11;i++) ow_crc16_update(this->Data[i]);
  ((sDS2450*)(this->Data))->CRC = ow_crc16_get();

  //Serial.print("CRC=");
  //Serial.println( ((sDS2408*)(this->memory))->CRC, HEX);
}
*/